EP1110012A1 - Hydrokinetic coupling apparatus with reduced space requirement, in particular for motor vehicle - Google Patents
Hydrokinetic coupling apparatus with reduced space requirement, in particular for motor vehicleInfo
- Publication number
- EP1110012A1 EP1110012A1 EP00925414A EP00925414A EP1110012A1 EP 1110012 A1 EP1110012 A1 EP 1110012A1 EP 00925414 A EP00925414 A EP 00925414A EP 00925414 A EP00925414 A EP 00925414A EP 1110012 A1 EP1110012 A1 EP 1110012A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turbine wheel
- web
- radial
- hub
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
- F16H2045/0273—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch
- F16H2045/0278—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch comprising only two co-acting friction surfaces
Definitions
- the present invention relates to a hydrokinetic coupling device, in particular for a motor vehicle, of the type described and shown for example in document WO-A-93/13339.
- This document describes and represents a hydrokinetic coupling device, in particular for a motor vehicle, of the type comprising: a casing provided with a wall, generally of radial orientation, suitable for being linked in rotation to a driving shaft;
- a locking clutch acting between the turbine wheel and the radial wall, which in particular comprises a web, integral in rotation and distinct from the hub, in the form of a ring of generally radial orientation, friction means cooperating with the wall and elastic bodies with circumferential action acting directly or indirectly between the web and the friction means.
- the turbine wheel is fixed, by means of a radially internal portion generally in the form of a flat ring of the outer casing of the turbine wheel which supports the blades of the turbine, directly to a flange of radial orientation of the hub, in the same way as the radially inner portion of the web, these two elements being able to be fixed together to the flange of the hub by means of common rivets.
- the invention provides a hydrokinetic coupling device of the type in, characterized in that the turbine wheel is linked in rotation to the hub by means of the web of which it is integral in rotation.
- the springs generally the elastic members with circumferential action, which comprises the torsion damper comprising the veil, can be installed on a circumference of large diameter which allows to transmit a significant torque and / or to increase the relative angular movement between the friction disc and the web for the benefit of better filtration of vibrations.
- the web comprises at least one fixing portion shaped so as to substantially match the contour of the portion facing the turbine wheel to form a wheel fixing area turbine on said portion for fixing the web;
- the turbine wheel is fixed to said portion for fixing the web by crimping;
- the turbine wheel has blades which include tabs for crimping the turbine wheel on the fixing portion of the web the web has an inner peripheral portion in the form of a flat ring, the inner radial edge of which is fixed adjacent axially against a flange, of radial orientation, of the hub;
- the inner radial edge of the web is received in a countersink formed in the rear radial face of the outer radial edge of the flange of the hub;
- the casing of the turbine wheel generally in the form of a shell, extends radially and axially beyond the inner peripheral edge of the blades supported by the shell;
- the veil has at its inner periphery a flat ring fixed to a flange of radial orientation belonging to the hub, the veil (94) comprising on the one hand at its outer periphery an annular peripheral portion for receiving the springs and, on the other share an intermediate portion for fixing the turbine wheel;
- the turbine wheel has a generally tapered or ovoid shape;
- the friction means consist of a disc, each of the faces of which is designed to cooperate with the wall and a piston, integral with said wall.
- the turbine wheel is fixed to an intermediate portion of the web so that it is suspended from the latter, a clearance existing between the turbine wheel and the flange integral with the hub. All these provisions make it possible to reduce the material necessary to produce the turbine wheel fixed beyond its internal periphery on the intermediate portion of the web.
- FIG. 1 is a half view in axial section of a first embodiment of a coupling device according to the teachings of one invention with its piston shown in the so-called “bridged”position;
- - Figure 2 is a view similar to that of Figure 1 which illustrates an alternative embodiment of the shape of the turbine wheel;
- Figure 3 is a view similar to that of Figure 1 which illustrates an alternative embodiment of the means for fixing the turbine wheel to the web.
- hydrokinetic coupling device 10 in particular for a motor vehicle transmission, of the type comprising a casing 12 one of the shells of which has a radial wall 14 which extends in a plane perpendicular to the general axis XX of the coupling device 10.
- the radial wall 14 is produced integrally in a single piece of sheet metal of substantially constant and stamped thickness and it extends, beyond its outer radial edge, by an axial orientation portion 16 in the form of a cylindrical skirt, the front free end edge 18 is designed to allow the connection of this shell 12 with the other shell 13 of the casing.
- the radial wall 14 comprises a central sleeve 20 which makes it possible to ensure the fixing and the rotational connection of the radial wall 14 to a driving shaft (not shown in the figure).
- the sleeve extends axially towards the rear from a central portion 22 of the radial wall 14 which is offset axially forwards with respect to the median radial plane in which the wall 14 extends.
- the rear annular free end edge 24 of the sleeve 20 is welded to the rear part of smaller diameter 26 of a stepped thrust ring 28 which extends axially towards the rear, outside the casing 12, by a rear end cylindrical section 30 intended to be connected to the driving shaft.
- the front part 32 of larger diameter of the thrust ring 28 extends axially inside the casing 12 and radially partly opposite the front internal face 34 of the central portion 22 of the wall 14 .
- the front part 32 of the thrust ring 28 delimits a cylindrical annular surface 36 which constitutes a sliding guide surface of an inner radial ferrule 38 belonging to a piston 40.
- the bearing surface 36 has a radial groove
- the large diameter portion 32 of the push ring 28 comprises a series of lugs 46, of axial orientation, which are angularly distributed in a regular manner and which determine, with the face 34 of the central part 22 of the radial wall 14, as many passages of radial orientation which put an internal chamber 48 into communication with one or more channels 50 which pass through the smaller diameter front cylindrical part 26 of the ring thrust 28, to make the chamber 48 communicate with the interior of the thrust ring 28 which is closed axially towards the front by the cylindrical section 30 and which opens axially towards the rear inside the body 52 in the form of hollow cylindrical sleeve belonging to a hub 54 which is internally grooved 56 to allow its connection in rotation with a driven shaft 55.
- the hub 54 is coaxial with the other elements of the device 10, and in particular with the thrust ring 28, and it extends radially outwards, from the rear end portion of its socket 52, by a flange 60 of radial orientation.
- a part 62 is attached to the flange 60 to constitute an axial support part on the one hand for the front radial face of the front part 32 of the thrust ring 28 and, on the other hand, for the annular face of front end of the ferrule 38 for sliding guide of the piston 40.
- the part 62 is essentially constituted by a plate in the form of a flat ring.
- the rear flat annular face of the plate 62 constitutes a bearing face for the ferrule 38 and for the front radial face of the ring 28.
- the plate 62 also forms a spacer between the flange 60 and the piston 40, that is to say that, in the disassembled position of the piston 40, there is an axial clearance between the front annular face facing the part inner radial of the piston 40 and the annular face opposite the flange 60.
- the main central part of the flange 60 is extended radially outwards by an outer radial edge 86, of greater axial thickness, which includes an annular countersink 88 formed in the rear radial face 90 of the flange 60.
- the radial bottom of the countersink 88 constitutes a rearward axial bearing surface for a flat annular radial inner edge and of radial orientation 92 belonging to the inner peripheral part in the form of a flat ring 106 of a web 94.
- This inner radial edge 92 is fixed to the edge 86 of the flange 60 by a series of rivets 95 each of which passes through a hole formed in the edge 86 of the flange 60 and a corresponding hole formed in the inner radial edge 92 of the web 94.
- each rivet 95 also passes through a hole formed in a radially inner part in the form of an edge or flat ring belonging to the envelope 103, in general shape of a shell, which supports the blades 113 of the turbine wheel 104.
- the web 94 From its inner radial edge 92, the web 94 has, radially outward, an elbow 108 then an intermediate portion 110, here substantially radially central, in the form of a flat ring so as to substantially match the contour of the portion opposite 105 of the turbine wheel 104, then by a portion 112 of generally frustoconical shape, and by an outer peripheral annular portion 114.
- the annular portion 114 is generally formed in an axial orientation groove which is open axially towards the rear in the direction of the radial wall 14. As can be seen in the figures, in which the annular portion 114 is illustrated in axial section , it comprises an outer annular part 116 of axial orientation which extends axially towards the rear from a front part in the form of a flat ring 118 which extends in a radial plane and which is connected to the peripheral edge exterior of the frustoconical portion 112 by an interior annular portion 120 of generally axial orientation.
- the peripheral annular portion 114 has a C or U-shaped profile lying down, and it receives a series of coil springs 122 with a circumferential action, which act on the same circumference and whose outside diameter is slightly less than the vertical height of the groove 114.
- the tabs (122) may be integral with the external periphery of the piston (40) intended to come rub directly or indirectly against the wall (14) of the housing (12).
- the invention applies equally well to a transmission of the single-sided or double-sided (multi-disc) type, in the case of a single-sided embodiment the piston (40) is clamped directly against the wall (14) of the casing with or without interposition of a friction lining on one or the other, the tabs (122) being able to be produced at the external periphery of the piston (40).
- the tabs (122) are carried by a disc (152) interposed between the piston (40) and the wall (14) and intended to be clamped between these two elements, friction linings can be used and attached either on the faces of the disc (152), or opposite these faces on the wall (14) and the piston (40).
- the springs 122 intervene between the web 94 and a friction disc 152 and belong to a torsion damper constituted by the web (94) - spring (122) - friction disc (152) assembly.
- the annular portion 114 has bearing zones which are circumferential bearing surfaces formed by the concentrically pressed ends which are formed radially inwards or outwards, respectively. outer 116 and inner 120 annular parts.
- the disc 152 is a part in the general shape of a flat ring.
- the rear friction lining 160 of the friction disc 152 is designed to cooperate with an annular friction track 170 which is formed opposite in the inner face of the radial wall 14. More precisely, the friction track 170 is machined in the inner face of a middle portion 172 of the radial wall 14 which is produced, by means of an annular axial stamping, so as to extend in a vertical plane offset axially towards the front, this is ie to the left when considering FIG. 1, with respect to the median vertical plane in which the radial wall 14 extends.
- the front friction lining 162 is designed to cooperate with an annular friction track 176, oriented axially towards the rear, which is formed on the corresponding face of the outer annular peripheral part 178 of the piston 40.
- the piston 40 is linked in rotation to the radial wall 14 by means allowing relative axial displacement between the piston (40) and the wall (14), these means here consist of a series of axially elastic tongues 180 arranged substantially along a circumference and which operate tangentially between the cover 12 and the piston 14 while allowing relative axial displacement of these two elements.
- annular portion 114 has at its outer periphery drive lugs 128 which extend axially forward towards the annular portion 114, substantially halfway between the annular parts 116 and 120.
- the drive legs 128 are distributed angularly in a regular manner and each of them is connected to the outer peripheral edge of the friction disc 152 by a right angle connection elbow. After mounting, there remains a possibility of relative axial displacement of the disc 152 relative to the web 94.
- the structure could be reversed both in single-sided and in two-sided and thus the portion (114) which retains the elastic members with circumferential action or springs (122), can belong to the disc (152) or to the piston (40), the tabs (128) then being taken from or attached to the web (94).
- the turbine wheel 104 is driven by an impeller wheel 107, thanks to the circulation of fluid contained in the casing and that, after starting the vehicle, the locking clutch allows, to avoid phenomena sliding between the turbine and impeller wheels, a connection of the driven shaft 55 connected to the turbine wheel 104, with the driving shaft connected to the radial wall 14 of the casing.
- the locking clutch thus intervenes between the turbine wheel and the radial wall. It slides by its piston 40 on the thrust ring 28 secured to the radial wall 14.
- the turbine wheel 104 is linked in rotation to the web 94 to which it is for example, according to the design illustrated in the figures, fixed by welding of the fixing portion 105 of its casing 103 to the part 110 of the web 94, the latter being integral in rotation with the flange 60 of the hub 54.
- the turbine wheel 104 is of a simplified design compared to the prior art insofar as it does not include any part of its casing for its rotational connection to the hub 54, 60, a radial clearance existing between the wheel 104 and the outer periphery of the chamfered flange 60 to further reduce the axial size and not to interfere with the wheel 104.
- the hydraulic converter is of the "narrow” or “extra flat” type, that is to say that the impeller 104 and impeller 107 wheels are generally tapered or ovoid so reduce the overall axial size of the coupling device.
- the design according to the invention contributes to this reduction in the axial dimensions insofar as it is possible to arrange the inner peripheral part 92 of the web 94 on one side, here rear, of the outer peripheral part 86 of the flange 60, while the radially innermost part of the turbine wheel 104 is adjacent to the chamfered front radial face of the periphery 92 of the flange 60.
- the design according to the invention makes it possible to take advantage of the space available, axially and radially inwards, and the absence of a radially interior connecting part of the turbine wheel 104 at the hub 54, 60, to extend the shell 103 radially inward and axially forward so as to improve the guiding of the fluid towards the reactor 115.
- the turbine wheel 104 is fixed to the fixing part 110 of the web 94 by a crimping operation.
- the blades 113 of the wheel have lugs 202 which extend substantially axially outwards through complementary slots 200 formed in the shell 105 and then through facing slots formed in the portion 110 and which are then folded down tangentially so that their end branches 204 ensure the crimping by axially tightening in mutual support the fixing parts of the web and of the turbine wheel.
- the tabs 202 thus ensure the rotational connection between the web and the blades, that is to say between the web and the turbine wheel.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9905723 | 1999-05-05 | ||
FR9905723A FR2793295A1 (en) | 1999-05-05 | 1999-05-05 | REDUCED SIZE HYDROKINETIC COUPLING APPARATUS, PARTICULARLY FOR MOTOR VEHICLE |
PCT/FR2000/001239 WO2000068600A1 (en) | 1999-05-05 | 2000-05-05 | Hydrokinetic coupling apparatus with reduced space requirement, in particular for motor vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1110012A1 true EP1110012A1 (en) | 2001-06-27 |
EP1110012B1 EP1110012B1 (en) | 2003-09-03 |
Family
ID=9545250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00925414A Expired - Lifetime EP1110012B1 (en) | 1999-05-05 | 2000-05-05 | Hydrokinetic coupling apparatus with reduced space requirement, in particular for motor vehicle |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1110012B1 (en) |
JP (1) | JP4933697B2 (en) |
DE (1) | DE10081342B3 (en) |
FR (1) | FR2793295A1 (en) |
WO (1) | WO2000068600A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2837551B1 (en) * | 2002-03-22 | 2004-05-14 | Valeo | HYDROKINETIC COUPLING APPARATUS AND METHOD FOR ASSEMBLING THIS APPARATUS |
US6938744B2 (en) * | 2002-09-25 | 2005-09-06 | Exedy Corporation | Piston coupling mechanism, lockup device for a fluid-type torque transmission device, elastic coupling mechanism, and spring installation method for an elastic coupling mechanism |
JP5330160B2 (en) * | 2009-08-31 | 2013-10-30 | アイシン・エィ・ダブリュ工業株式会社 | Turbine hub of fluid coupling and bearing structure using turbine hub |
DE102009042260B4 (en) | 2009-09-22 | 2015-12-10 | Benteler Automobiltechnik Gmbh | turbocharger |
CN103261744B (en) * | 2010-12-16 | 2016-08-10 | 舍弗勒技术股份两合公司 | Improved friction member for balancing unit load |
JP5202718B1 (en) * | 2011-12-05 | 2013-06-05 | 株式会社エクセディ | Torque converter lockup device |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2535002B1 (en) * | 1982-10-26 | 1988-03-25 | Valeo | TRANSMISSION WITH HYDRAULIC COUPLING MEMBER AND LOCKING CLUTCH, PARTICULARLY FOR MOTOR VEHICLE |
US5209330A (en) | 1991-12-23 | 1993-05-11 | Ford Motor Company | Slipping bypass clutch for hydrokinetic torque converter |
EP0586304A1 (en) * | 1992-09-04 | 1994-03-09 | Société Anonyme dite: REGIE NATIONALE DES USINES RENAULT | Hydrokinetic torque converter with lock-up clutch and its mounting method |
WO1994007058A1 (en) * | 1992-09-24 | 1994-03-31 | Valeo | Torsional damper for lock-up clutch, and lock-up clutch comprising said torsional damper |
FR2695975B1 (en) * | 1992-09-24 | 1994-11-25 | Valeo | Locking clutch for hydrokinetic coupling device. |
DE4433256A1 (en) * | 1993-10-29 | 1995-05-04 | Luk Lamellen & Kupplungsbau | Torque converter |
DE69621677T2 (en) * | 1995-03-17 | 2003-01-02 | Toyota Jidosha K.K., Toyota | Hydrodynamic torque converter with lock-up clutch and built-in vibration damper |
JP3579988B2 (en) * | 1995-06-09 | 2004-10-20 | トヨタ自動車株式会社 | Fluid transmission damper device |
DE19626685A1 (en) * | 1995-07-19 | 1997-01-23 | Luk Getriebe Systeme Gmbh | Hydrodynamic torque-converter for motor vehicle industry |
FR2738891B1 (en) * | 1995-09-19 | 1997-10-24 | Valeo | HYDROKINETIC COUPLING APPARATUS |
JPH09100894A (en) * | 1995-10-09 | 1997-04-15 | Toyota Motor Corp | Torque convertor with lock up clutch |
JP3598706B2 (en) * | 1996-01-26 | 2004-12-08 | トヨタ自動車株式会社 | Fluid transmission |
JPH09236173A (en) * | 1996-03-01 | 1997-09-09 | Toyota Motor Corp | Fluid type transmission device with lockup clutch |
FR2775747B1 (en) | 1998-03-03 | 2000-07-13 | Valeo | HYDROKINETIC COUPLING APPARATUS, PARTICULARLY FOR MOTOR VEHICLE |
-
1999
- 1999-05-05 FR FR9905723A patent/FR2793295A1/en not_active Withdrawn
-
2000
- 2000-05-05 EP EP00925414A patent/EP1110012B1/en not_active Expired - Lifetime
- 2000-05-05 JP JP2000617351A patent/JP4933697B2/en not_active Expired - Fee Related
- 2000-05-05 DE DE10081342T patent/DE10081342B3/en not_active Expired - Fee Related
- 2000-05-05 WO PCT/FR2000/001239 patent/WO2000068600A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO0068600A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2002544449A (en) | 2002-12-24 |
EP1110012B1 (en) | 2003-09-03 |
WO2000068600A1 (en) | 2000-11-16 |
FR2793295A1 (en) | 2000-11-10 |
JP4933697B2 (en) | 2012-05-16 |
DE10081342T1 (en) | 2001-08-02 |
DE10081342B3 (en) | 2011-12-08 |
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